This "Deluxe Edition" was first released in 2012 in a CD + BR-Audio box set. Since last year it's also available separately, either on 16 (I believe) CDs or on Blu in lossless 24bit. Apparently it's available on HDtracks as well.

Considering how famous this recording is, it's strange that it doesn't seem to be out there. Or at least it can't be found that readily.